The Circulars are technical publications of general interest intended to aid conservation and management. Publications that review in considerable detail and at a high technical level certain broad areas of research appear in this series.

This report addresses one of the recommendations as outlined by the Conserving the Future: Wildlife Refuges and the Next Generation, the U.S. Fish and Wildlife Service’s 21st century strategic vision for the National Wildlife Refuge System. It...

Version 1.3 was updated June 2010. Recovery planning has evolved considerably over the years as we have learned more about the root causes of endangerment and what it takes to recover species. Species’ biological needs and responses to specific...

This is a panel discussion with five former Director's of the Fish and Wildlife Service which include; Lynn Greenwalt, John Turner, Jaime Rappaport Clark, Steve Williams, and Dale Hall. Also present is the current Director of the Fish and...